Home / 99,950.04-137,938.91-56,931.35

Finding the Fourth Proportional to 99,950.04, 137,938.91 and 56,931.35

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Solution

The fourth proportional to 99,950.04, 137,938.91 and 56,931.35 is: 78,569.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,950.04 : 137,938.91 = 56,931.35 : x
  2. Step 2: Convert to fraction form
    99,950.04/137,938.91 = 56,931.35/x
  3. Step 3: Cross multiply
    99,950.04x = 137,938.91 × 56,931.35
  4. Step 4: Simplify right side
    99,950.04x = 7,853,047,389.48
  5. Step 5: Solve for x
    x = 7,853,047,389.48/99,950.04
  6. Step 6: Final answer
    x = 78,569.73

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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.