Home / 131,541.60-197,312.40-87,218.40

Finding the Fourth Proportional to 131,541.60, 197,312.40 and 87,218.40

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Solution

The fourth proportional to 131,541.60, 197,312.40 and 87,218.40 is: 130,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,541.60 : 197,312.40 = 87,218.40 : x
  2. Step 2: Convert to fraction form
    131,541.60/197,312.40 = 87,218.40/x
  3. Step 3: Cross multiply
    131,541.60x = 197,312.40 × 87,218.40
  4. Step 4: Simplify right side
    131,541.60x = 17,209,271,828.16
  5. Step 5: Solve for x
    x = 17,209,271,828.16/131,541.60
  6. Step 6: Final answer
    x = 130,827.60

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1.5x scale

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.