Home / 130,715.04-180,425.38-77,017.40

Finding the Fourth Proportional to 130,715.04, 180,425.38 and 77,017.40

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Solution

The fourth proportional to 130,715.04, 180,425.38 and 77,017.40 is: 106,306.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,715.04 : 180,425.38 = 77,017.40 : x
  2. Step 2: Convert to fraction form
    130,715.04/180,425.38 = 77,017.40/x
  3. Step 3: Cross multiply
    130,715.04x = 180,425.38 × 77,017.40
  4. Step 4: Simplify right side
    130,715.04x = 13,895,893,661.61
  5. Step 5: Solve for x
    x = 13,895,893,661.61/130,715.04
  6. Step 6: Final answer
    x = 106,306.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.