Home / 145,087,479.60-217,347,784.20-87,408,416.40

Finding the Fourth Proportional to 145,087,479.60, 217,347,784.20 and 87,408,416.40

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Solution

The fourth proportional to 145,087,479.60, 217,347,784.20 and 87,408,416.40 is: 130,941,868.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,087,479.60 : 217,347,784.20 = 87,408,416.40 : x
  2. Step 2: Convert to fraction form
    145,087,479.60/217,347,784.20 = 87,408,416.40/x
  3. Step 3: Cross multiply
    145,087,479.60x = 217,347,784.20 × 87,408,416.40
  4. Step 4: Simplify right side
    145,087,479.60x = 18,998,025,624,970,940
  5. Step 5: Solve for x
    x = 18,998,025,624,970,940/145,087,479.60
  6. Step 6: Final answer
    x = 130,941,868.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.