Home / 119,038.21-164,279.95-78,681.98

Finding the Fourth Proportional to 119,038.21, 164,279.95 and 78,681.98

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Solution

The fourth proportional to 119,038.21, 164,279.95 and 78,681.98 is: 108,585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,038.21 : 164,279.95 = 78,681.98 : x
  2. Step 2: Convert to fraction form
    119,038.21/164,279.95 = 78,681.98/x
  3. Step 3: Cross multiply
    119,038.21x = 164,279.95 × 78,681.98
  4. Step 4: Simplify right side
    119,038.21x = 12,925,871,954.30
  5. Step 5: Solve for x
    x = 12,925,871,954.30/119,038.21
  6. Step 6: Final answer
    x = 108,585.91

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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.