Home / 145,430.10-218,145.15-144,047.70

Finding the Fourth Proportional to 145,430.10, 218,145.15 and 144,047.70

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Solution

The fourth proportional to 145,430.10, 218,145.15 and 144,047.70 is: 216,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,430.10 : 218,145.15 = 144,047.70 : x
  2. Step 2: Convert to fraction form
    145,430.10/218,145.15 = 144,047.70/x
  3. Step 3: Cross multiply
    145,430.10x = 218,145.15 × 144,047.70
  4. Step 4: Simplify right side
    145,430.10x = 31,423,307,123.66
  5. Step 5: Solve for x
    x = 31,423,307,123.66/145,430.10
  6. Step 6: Final answer
    x = 216,071.55

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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.