Home / 191,173.07-286,710.40-78,885.20

Finding the Fourth Proportional to 191,173.07, 286,710.40 and 78,885.20

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Solution

The fourth proportional to 191,173.07, 286,710.40 and 78,885.20 is: 118,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,173.07 : 286,710.40 = 78,885.20 : x
  2. Step 2: Convert to fraction form
    191,173.07/286,710.40 = 78,885.20/x
  3. Step 3: Cross multiply
    191,173.07x = 286,710.40 × 78,885.20
  4. Step 4: Simplify right side
    191,173.07x = 22,617,207,246.08
  5. Step 5: Solve for x
    x = 22,617,207,246.08/191,173.07
  6. Step 6: Final answer
    x = 118,307.50

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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.